Pool 25: Land Ownership Requirements in Moving the Control Point to the Dam.

Descriptive Note:

Technical rept.,

Corporate Author:

Personal Author(s):

Report Date:

1997-03-01

Pagination or Media Count:

23.0

Abstract:

We estimated the amount of land that would have to be acquired if an alternative water level management plan was used for Pool 25 on the Upper Mississippi River. The work was performed as part of a study to evaluate water regulation alternatives that could minimize negative impacts and increase ecological benefits of dam operation. We used a one dimensional model HEC-2 to estimate the ordinary high water profile and water surfaces at various discharges and management options, by river mile. Maps of these data were then created with a geographic information system, along with maps of land elevations, both above and below the surface of the river, lands controlled by the managing agency, and levees. The ownership and easement, ordinary high water, and levee coverages were combined to represent areas that would not have to come under Government control at a discharge that creates the ordinary high water profile. As a validation exercise, we estimated the amount of lands that would have to come under Government control if the dam were to be constructed now and no lands were under Government control.